Cellulose Insulation

Blown in Cellulose Insulation for Attics

Adding blown in cellulose attic insulation to your attic can also help to keep your home warm in the winter and cool in the summer, while saving you money on energy costs.

This is part of our process to protect and maintain the thermal boundary of your home; separating the conditioned space (living area that you want to keep heated and cooled) from the unconditioned space.

Many homes have inadequate insulation—often none at all, in older homes! Or, your attic may be insulated with fiberglass batts that are doing a poor job. If needed, cellulose can be easily blown in over existing fiberglass batt insulation. Researchers at Oak Ridge National Laboratories found that capping fiberglass insulation with cellulose not only adds R-value, it actually restores the effective R-value that fiberglass insulation loses during cold weather.

Current Connecticut building codes require a minimum R-Value of 38 in an attic. You can upgrade to a R38 or the maximum recommended by the Department of Energy, which is R49.

When blown in cellulose is used in your attic, we can install the correct amount of insulation to achieve the desired R-Value, rather than trying to force a pre-formed fiberglass batt into a restricted, or oddly shaped space. Researchers of the University of Colorado School of Architecture and Planning have concluded that blown in cellulose attic insulation performs as much as 38% better than fiberglass batts.

Features of cellulose insulation:

• Made of up to 85% recycled paper
• Class 1, Type A Building Material – Fire Retardant
• Part of the Energy Star home sealing program
• Meets ASTM C739 standard for sound barriers

It is important that we also air seal your attic when installing cellulose attic insulation, because cellulose alone is an efficient insulator but is not an air seal.   We recommend air sealing attic penetrations and top plates, and boxing out any recessed lights as part of our process to install cellulose attic insulation.